PARYAVARAN SURAKSHA SAMITI vs UNION OF INDIA .

The Supreme Court directed that no industry requiring 'consent to operate' from Pollution Control Boards may function without a fully operational primary effluent treatment plant, as mandated by environmental regulations. The Court held that State Pollution Control Boards must issue notices to all such industries to ensure compliance within three months, failing which they shall be restrained from operating. Additionally, the Court authorized disconnection of electricity supply to non-compliant industries, reinforcing the legal obligation to maintain environmental standards under the Water (Prevention and Control of Pollution) Act, 1974.